Volcanic activity worldwide 13 Sep 2021: Fuego volcano, Popocatépetl, Dukono, Reventador, La Palma,...

La Palma (Canary Islands (Spain)): The strong earthquake swarm is continuing beneath Cumbre Vieja, and now PEVOLCA has raised the alert level to Yellow, citing the repeated occurance of earthquake swarms since 2017, with this one being the strongest and also the shallowest, suggesting magma is slowly rising into the edifice. Measurements of Helium-3 gas flux are also indicating this.
...13 Sep:
A strong earthquake swarm started under the area of La Cumbre Vieja volcano in the southern part of the Island yesterday. So far, more than 350 tremors have been detected, including 14 quakes of magnitudes above 3.0 and 226 quakes between 2.0 and 2.9.
The strongest was a magnitude 3.4 event at 00.46 am local time this morning, which was felt by nearby residents.
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Most earthquakes are at shallow depths around 8-12 km, suggesting that new magma is currently intruding into a reservoir under the volcano. Whether or not this might be leading up to new volcanic activity is impossible to say at this stage, as there seem not to be other signs of significant volcanic unrest at this stage. Similar earthquake swarms have occurred in the past as well, most recently in late Dec last year; however back then, the quakes were deeper (at around 30 km depth), which could indicate that magma has now risen higher in the volcano's underground storage systems.

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20210913/1924Z VA CLD UNKNOWN OBS VA DTG:13/1920Z

Dukono (Halmahera): (13 Sep) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 10 kts in NW direction.
The full report is as follows: VA OBS TO FL070 EXT NW AT 13/0000Z. to 7000 ft (2100 m)

Pagan (Mariana Islands): (13 Sep) The explosive eruption of the volcano, that started on 1 September, for now already has ended or paused. The activity was characterized by low-level ash emissions.
The eruption calmed down on 6 September as Volcanic Ash Advisory Center (VAAC) Tokyo and the observatory Northern Mariana Islands detected ash and sulfur dioxide (SO2) emissions in satellite data.
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The alert level for the volcano was lowered to "yellow".
It is unclear whether the eruption has paused or ended. Emissions of ash and gas could resume without warning.


Great Sitkin (United States, Aleutian Islands): (13 Sep) The effusive eruption of the volcano is in progress as the active extrusive lava dome continues to grow in the inner summit crater since mid-July.
A satellite image from 9 September confirms that a new lava flow started to emerge from the summit crater on the southern flank.
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The actively lava dome has now mostly covered the previous summit lava dome from the 1974 eruption. The lava dome has currently dimensions of about 1,100 m (3,600 ft) east-west and about 860 m (2,820 ft) north-south, and is 25–30 m (82–98 ft) thick.
A swarm of small earthquakes continues to be observed beneath the volcanic edifice.


Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 .
The full report is as follows: PSBL VA EM to 19000 ft (5800 m)
...13 Sep:
CENAPRED's surveillance cameras observed a few moderate-to-strong vulcanian explosions during the past few days.
Two explosions occurred at 01:34 and 10:00 local time yesterday showering the summit cone with glowing lava bombs and caused moderate to strong incandescent avalanches. A dense dark ash plume reached approx. 20,000 ft (6,100 m) altitude.
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181 emissions of water vapor and gases were detected.
The seismic network recorded 368 minutes of internal tremor including two volcano-tectonic earthquakes with magnitude M 1.8 and 2.0.


Fuego (Guatemala): Mild explosive activity continues from the volcano. The Volcanic Ash Advisory Center (VAAC) Washington reported intermittent emissions of volcanic ash plumes.
The full report is as follows: sporadic emissions of volcanic ash

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in W direction.
The full report is as follows: LGT VA EMS to 15000 ft (4600 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 and is moving at 13 kts in SE direction.
The full report is as follows: continuous ash emissions to 23000 ft (7000 m)

Volcano Activity Summary for 13 Sep 2021: